The vignette are always shown between 18 to 55mm, Mostly at 18 and 55 respectively.

How to get it???- Make the DT lens as non CPU lens.... By attach the tape on the lens's contact between pin no. 3 to 5, begin from left.- Used the 3rd Party lens that is not recognized by SONY...., Some of 3rd lens is not presented DT information to SONY camera... It's mean that you must enter "APS-C size capt" menu to set the camera know the DT lens.